
Actinocyclidae is a family of sea slugs, dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea. This family is within the clade Euctenidiacea.

Actinocyclus is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Actinocyclidae.

Hallaxa is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Actinocyclidae.

Hallaxa chani is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae.

Hallaxa cryptica is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae.

Hallaxa elongata is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae.

Hallaxa fuscescens is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae.

Hallaxa indecora is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae.